Nebulizer Liquid Verification via Nebulization Time
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Solution Overview
Problem
Current nebulizers that use a mesh to nebulize liquids lack a method to verify the correct medication is being dispensed, which can lead to incorrect dosages or contamination of sensitive drugs like protein-based medications.
Innovation Solution
A method that measures the time taken to nebulize a specified volume of liquid and compares it to an estimated value to determine if the correct liquid is being used, utilizing data carriers and a control unit to estimate and compare nebulization times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mesh-based nebulizer is used to deliver medication, then the nebulizer can be used with a range of different liquid medications, but there is no way to verify that the correct medication has been poured into the nebulizer
Solution Approach 1:
The system measures the actual nebulization time of the liquid and compares it to expected time values stored in memory. This feedback mechanism allows the nebulizer to verify whether the correct medication is present by detecting deviations in nebulization time, thereby resolving the contradiction between versatility and verification reliability
Solution Approach 2:
The patent replaces manual verification methods with an automated electronic system that uses a sensor to detect liquid properties and a processor to compare measured nebulization time against stored reference values. This substitution of mechanical/manual verification with electronic sensing and processing enables reliable automated verification
2Ease of operation
If the wrong medication is loaded into the nebulizer, then incorrect dosage or contamination occurs, but current systems lack detection capability
Solution Approach 1:
The system performs verification of the correct medication before treatment begins by measuring nebulization time and comparing it to expected values. This preliminary check prevents harmful effects of incorrect medication administration while maintaining ease of operation, as the verification occurs automatically without requiring additional manual steps from the user
Solution Approach 2:
The nebulizer provides immediate feedback by comparing actual nebulization time with expected values and alerting the user if the wrong medication is detected. This feedback loop prevents contamination and incorrect dosage by stopping the process before harmful effects can occur
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures accurate verification of the correct medication by comparing actual nebulization time to predetermined values, preventing incorrect dosages and contamination, thereby ensuring patient safety.
Implementation Method 1
Piezo-mesh based nebulizers are commonly used to generate aerosols in such drug delivery apparatus, whereby for instance a piezoelectric element vibrates a nozzle plate (also referred to as a mesh) to produce the fine aerosol spray
Data Source
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AI summary
There is provided a method of determining whether a first type of liquid is being used in a nebulizer, the method comprising obtaining a measurement of the time taken by the nebulizer to nebulize a specified volume of liquid that was held therein, comparing the time taken to nebulize the specified volume of liquid to an estimated value for the time required to nebulize the same volume of the first type of liquid, and determining whether the liquid nebulized by the nebulizer was the first type of liquid based on the comparison.